And atwood b



(No Model.)

J. T. WHITTLESEY & A. B. KEYES.

' RUBBER CUTTING MACHINE.

No. 426,577. Patented Apr. 29, 1890.

UNITED STATES PATE T OFFICE.

JAMES T. \VHITTLESEY, OF NEW HAVEN, CONNECTICUT, AND ATVOOD B. KEYES, OF EAST PRINCETON, MASSACHUSETTS.

RUBBER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 426,577, dated April 29, 1890.

Application filed December 13, 1889. Serial No. 333,607. (No model.)

To all whom/i6 may concern:

Be it known that we, J AMES T. WHITTLEsEY, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, and ATWOOD B. KEYES, a citizen of the United States, residing at East Princeton, in the county of \Vorcester and State of Massachusetts, have invented a new and useful Improvement in Rubber-Cutting 1o Machines, of which the following is a specification.

Our invention relates to im fnovements in rubber-cutting machines, in which a moving cutting-tool operates in conjunction with a I 5 stationary bevel-edged form or die; and the object of our invention is to cut a beveled edge on rubber or any other flexible material. o attain this result by the mechanism illustrated in the accompanying drawings, in

which- Figure 1 is a side view of the machine. Fig. 2 is a top view of the bevel-edged form or die. Fig. 3 is an inverted view of the cutting tool or knife. Fig. 4 is a vertical section of the cutting-tool on the line 1) 17, Fig. 3.

Similar letters refer to similar parts throughout the several views.

The base 0, the upright bars (Z d, and the cross-bar a form the framework of the ma- 0 chine. The cross-bar a forms a bearing for the movable vertical rod 7L. The uprights (Z (Z form bearings for the slide or cross-head b, to which is attached the cutting-tool g by bolts 7t 7t 7t 70. The cutting tool g with the cross-head or slide 1) and the red h are rigidly connected and receive a reciprocating motion from an external sonrces uch as a cam or eccentric-but which are not essential to our invention.

The cutting-tool g is an endless steel band sharpened at its lower edge and fastened to v the cross-head l), as herein set forth. \Vithin the cutting-tool g is a block or holder w, which protrudes below the sharpened edge of the knife g, and when in use it is forced upward into the cutting-tool by pressure from beneath sufficient to compress the springs rc as, Fig. 4. The screws 8 5 hold the block or holder 10 and the springs 00 00 in their proper position, and also afford a means of adjusting the position of the block in below the cuttingedge of the knife g, for a purpose to be hereinafter stated.

The base-block f holds a copper plate 0, to

which is riveted or otherwise fastened the bevel-edged form or die Z, and the two are temporarily secured to the base-block f by screws n n n n, and the whole in turn is secured to the base 0 by screws 6 c.

The essential feature of our invention is the bevel-edged form or die Z, working in conjunction with the knife 9 andthe block to, as herein set forth.

7e attain the result claimed by the operation of our machine, as follows: A sheet of material-such as rubber, felt, &c.is placed upon the bevel-edged form Z, after which the knife g, containing the block to, is forced downward until the latter comes in contact with the material upon the die Z, holding it firmly in place, and by the action of the springs 00 as recedes within the knife 9', thus allowing the knife to complete the cut. The block to also removes the material from within the cutting-tool g when the same is ascending, leaving it lying on the die, where it can be easily displaced, thereby preventing the necessity of stopping the machine for this purpose. The knife g descends just outside of the beveled form Z,bending the material over its upper edge, and makes a wedge-shaped shearing cut down through the substance, which is completed when the cutting-tool g meets the copper plate 0 at the spreading base of the die Z.

The angle of the beveled edge, the thickness of the form Z, and also its shape and outline maybe varied to accommodate the thick ness of material used and amount of taper required in the cut. The cutting-tool 9 may also be of any desired shape or size, so long as it corresponds with the shape of the beveledged form Z, thus permitting them to work together.

\Ve are aware that previous to our inven tion machines similar in outline to the one herein described have been used for various purposes. e also are aware that machines of various kinds have been invented and used in cutting flexible material. We do not,

therefore, claim the herein-described machine operating therein, of a stationary bevel-edged broadly; but form or die, substantially as shown, and for IO What We do claim as our invention, and dethe purpose specified. sire to secure by Letters Patent, is JAMES T. WVHITTLESEY.

In a machine for cutting a beveled edge on ATVOOD B. KEYES. rubber or other flexible material, the combi- Witnesses: nation, with a reciprocating endless steel PETER K. KEYES,

band cutting-tool and a spring-pressed block 1 AMOS E. KENDALL. 

